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Comparison of Several Extraction Methods for the Spectrophotometric Determination of Nitrate and Nitrite in Vegetables
CHEN Qiu-sheng , LIANG Shu-xuan , LI Ke , SUN Han-wen . Comparison of Several Extraction Methods for the Spectrophotometric Determination of Nitrate and Nitrite in Vegetables[J]. Journal of Hebei University(Natural Science Edition), 2007 , 27(2) : 174 -178 . DOI: 10.3969/j.issn.1000-1565.2007.02.018
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